and new orleans. >>> and now, to the increasingly complicated case of lance armstrong. after years of denying any drug use, the once-celebrated cyclist has come clean. >> it's kind of an apology tour that included a face-to-face with staffers at his charity. abc's neal karlinsky has the latest. >> reporter: lance armstrong is rewriting his own story. now, reportedly admitting in an interview with oprah, that he did, in fact, use performance-enhancing drugs to win the tour de france. earlier, standing amidst a tear-filled room of 100 livestrong staff members, sources tell abc news, armstrong took responsibility for the damage his actions have caused the livestrong foundation. the cancer charity he founded, and which helped turn him from athlete to global icon. it's not just about the drugs, but the defiance. his categorical insistence that he never cheated. you can see it in his unflitching glare, for more than a decade, on tv, to fans, and cancer survivors. >> for the cynics and skeptics, i'm sorry for you. i'm sorry you can't dream big. and i'm sorry you don't believe